Flask--路由系统

def auth(func):
    def inner(*args, **kwargs):
        print('before')
        result = func(*args, **kwargs)
        print('after')
        return result
    return inner

@app.route('/index.html',methods=['GET','POST'],endpoint='index')
@auth
def index():
return 'Index'

或

def index():
return "Index"

self.add_url_rule(rule='/index.html', endpoint="index", view_func=index, methods=["GET","POST"])
or
app.add_url_rule(rule='/index.html', endpoint="index", view_func=index, methods=["GET","POST"])
app.view_functions['index'] = index


或
def auth(func):
def inner(*args, **kwargs):
print('before')
result = func(*args, **kwargs)
print('after')
return result
    return inner

class IndexView(views.View):
methods = ['GET']
decorators = [auth, ]
def dispatch_request(self):
print('Index')
return 'Index!'

app.add_url_rule('/index', view_func=IndexView.as_view(name='index')) # name=endpoint


或


class IndexView(views.MethodView):
methods = ['GET']
decorators = [auth, ]

def get(self):
return 'Index.GET'

def post(self):
return 'Index.POST'


app.add_url_rule('/index', view_func=IndexView.as_view(name='index')) # name=endpoint



@app.route和app.add_url_rule参数：
rule, URL规则
view_func, 视图函数名称
defaults=None, 默认值,当URL中无参数，函数需要参数时，使用defaults={'k':'v'}为函数提供参数
endpoint=None, 名称，用于反向生成URL，即： url_for('名称')
methods=None, 允许的请求方式，如：["GET","POST"]


strict_slashes=None, 对URL最后的 / 符号是否严格要求，
如：
@app.route('/index',strict_slashes=False)，
访问 http://www.xx.com/index/ 或 http://www.xx.com/index均可
@app.route('/index',strict_slashes=True)
仅访问 http://www.xx.com/index
redirect_to=None, 重定向到指定地址
如：
@app.route('/index/<int:nid>', redirect_to='/home/<nid>')
或
def func(adapter, nid):
return "/home/888"
@app.route('/index/<int:nid>', redirect_to=func)
subdomain=None, 子域名访问
from flask import Flask, views, url_for

app = Flask(import_name=__name__)
app.config['SERVER_NAME'] = 'abc.com:5000'


@app.route("/", subdomain="admin")
def static_index():
"""Flask supports static subdomains
This is available at static.your-domain.tld"""
return "static.your-domain.tld"


@app.route("/dynamic", subdomain="<username>")
def username_index(username):
"""Dynamic subdomains are also supported
Try going to user1.your-domain.tld/dynamic"""
return username + ".your-domain.tld"


if __name__ == '__main__':
app.run()